Two explosions heard and smoke seen above the building of Brussels airport, The Guardian reports.
Brussels Airport has confirmed there have two explosions and that the airport has been evacuated. It also warned people to stay away from the area.
There are unconfirmed reports that 11 people have been killed in the blasts.
A local journalist cited firefighters for the death of 11. The Belgian news agency Belga said one person was killed and several injured.
According to reports the incident centred on an American Airlines desk in a departure hall.
The incident came as the Belgian capital was on a state of high alert following the arrest of Paris terror attack suspect Salah Abdeslam in the city last week.
Sky News Middle East correspondent Alex Rossi, who was at the airport en route for Tel Aviv, told: "I could feel the buildings move... The thinking here by everybody is that it is some kind of terrorist attack although that hasn't been verified by anyone here at the airport. No word too of casualties. Don't know how the explosion took place, the method if you like. But it certainly seems Brussels airport has been targeted in a terrorist attack. We are all being moved out of the airport now towards the emergency exit. There is a great deal of confusion here. Certainly there are a number of very upset, as you might imagine, very frightened people."
He added: "There are fears that there might be other attackers."
Rail traffic to the airport has been suspended and planes are being prevented from landing.
Via: The Guardian and agencies